The France international centre-back came off athalf-time during the Gunners' 3-0 defeat ofManchester City with an Achilles knock but is inline to start the Premier LeagueArsenal centre-back LaurentKoscielny will be fit for theirPremier League opener againstCrystal Palace, says managerArsene Wenger.The France international waswithdrawn at half-time duringSunday's 3-0 Community Shield victory againstManchester City, replaced by Nacho Monreal, butWenger is satisfied that the issue is not serious."Koscielny had a knock on his Achilles but he should beavailable for Saturday," he told reporters.New signing Calum Chambers, a £16 million arrival,partnered Koscielny at Wembley and is expected to doso again on Saturday.Wenger also confirmed that goalkeeper David Ospina, asummer purchase from Nice, is "two or three weeksaway" from being in a position to make his debut. We hope Arsenal doesn't make this a 3-0 opener like against Aston villa. Post by afoxy